Coupling.



I. WEISS.

COUPLING.-

APPLIUATION FILED FEB.'18, 1914.

5 1 9 1 5 w. J d m n 8 t a P mmmlllgmwlmm llt , longitudinal section of the coupling, Figs.

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Josnr wn'rss, or -MUNIGH, GERMANY.

cont-Line.

Specification of Letters Patent.

Patented Jan. a, rare.

- Application filed February is, 1914. Serial No. 819,603.

To all whom it may concern Be it known that 'I, Josnr WEISS, citizen of Germany, residing at Munich, Bavaria,

Germany, have invented certain new and useful Improvements in Couplings; and I do hereby declare the following to be a full,

clear, and exact description of the invention,-

such as will enable others skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide an improved device whereby two objects or members can be securely coupled with each other by a simple rotational movement after insertion of a portion of one of said members into a hole, recess or socket formed in the other member.

The invention is illustrated in the accompanying drawing as applied to the connection of a tool to its haft, Figure 1 being a 2 and 3 being cross-sections; and Fig. 4 a sectional detail. Fig. 2 shows the position in which the coupling is made, and Fig. 3 25 the position in which it is separated.

In the drawing, a designates a cylindrical haft or holder, and b a tubular member rotatable in a bore or socket formed in the haft a. As best shown in Fig. 1, the bore of the tubular member I); is eccentric, so that the wall of the tube is of varying thickness around the bore. The tube has a transverse slot 0 extending somewhat more. than halfwayaround its circumference, and giving access to the bore through the tube wall. Within the socket in the haft a there is a lateral projection 03, extending into the slot 0 and so proportioned, that itr canextend through the narrower part of the slot into the bore of the tube b, whereas when it lies in the wider part of the slot it does not enter the bore of the tube. It will be seen that the projection d lying in the slot 0, limits the ex tent to which the tube 6 can be rotated; in one end position of the tube the projection projects through the. tube wall into the bore (Fig. 2) and in the other end position the projection lies wholly within the slot (Fig. 3).

The haft a is used for holding atool e, the tang f of which fits into the tube 6 and has a lateral recess 9 for enga ement with the proeing positioned so jection' 01, this recess that when the tang is inserted, the recess is at the same' level, in the socket, as the pro- 'jection d. 1

accidental rotation of the latter.

this manner, an external mark may be provided on the tube. The tube is then rotated in the direction indicatedby the arrow in Fig. 3, whereby the projection 03 is caused to enter the recess the haft a.

In the construction illustrated the projecg and lock the tang f in tion (l is the tip of a screw screwed into the haft a, but a permanently fixed projection may be used, or the pro ection may be made adjustable in some other "way.

As indicated by dotted lines in Fig. 1 and in full lines in Fig. 4, a spring 72. may be arranged in the socket of the haft, to bear against the wall of the tube 6 and prevent As shown in the drawing, the bore or socket in the haft a is eccentric, so that when the final adjustment is made, as shown in Fig. 2, the eccentricity of the socket corrects ,the eccentricity of the tube bore, and the tang f is fixed centrally tothe haft.

What I claim as my invention and desire to secure by Letters Patent of the United States is-- 1. A device of the ,character specified, embodying a member provided with an eccentrio bore forming a socket, a projection stationarily supported by said member and'extendingradially into said socket, and a tubular member rotatable in said socket, said tubular member having an eccentric bore of less length than the total diameter of said tubular member through which s'lot' said rojection extends whereby rotation of said tubular member in one d rection will move said male member": transversely of said socket into engagement i i ti p oj io and rotation of said tubular-member in the opposite direction will move said male member-out of engagement with'said projection.

2. A device of the character specified, embodying a handle having an eccentric socket at one end thereof, a tubular member rotatable'in said socket, said tubular member having" an eccentric axial bore and a radial slot of less length than the diameter of the male member into engagement with said 10 member, said member being adapted to restud.

ceive a' recessed male member, and a stud In testimonywhereof I hereunto aflix my stafiionarily supported by said handle and signature in the presence of two witnesses.

" projecting mto said socket a distance shorter than the greatest width of said slot and JOSEF WEISS greater tlian'the least width of said slot, Witnesses: whereby rotation of said tubular member in MARIA AmmELLER,

one direction will force the recess of said Tmconon TRKGER. 

